Storage and transport containers



April 14, 1970 R. FORREST 3,506,180

STORAGE AND TRANSPORT CONTAINERS Filed Oct. 51. 19s? 5 Sheets-Sheet 1//V l/E N TOR [an Zoberz? Forresfi ATTORNEYS April 14, 1970 I. R.FORREST STORAGE AND TRANSPORT CONTAINERS 5 Sheets-Sheet 2 Filed Oct. 31,1967 n fl m m n g m n m M" h u n U L i U m 2 m 4 w|||||||||| n L 4m 2 3u H w b m 5 a 5 3 F m i an u U .N. U -1 H a Q U z 4 2 a\ c n a m m 3 3 6U l h n 1 I I 5 WM ll 4 FIGS.

w 6 m m m 1 n a ATTORNEYS April 1970 l. R. FORREST 3,506,180

7 STORAGE AND TRANSPORT CONTAINERS 3 Sheets-Sheet 3 Filed. Oct. s1, 1967FIGQ.

MW r V& Z

BY mp2, 13126 W 6) ATTORXNEYS United States Patent US. Cl. 229-14 4Claims ABSTRACT OF THE DISCLOSURE A container for liquids and substancesin granular or paste condition which comprises an outer receptacle, aliner slidably fitting within the outer receptacle, and a bag offlexible sheet material secured to the inner surface of the walls ofsaid liner.

Reference is made to British patent application No. 18,849/6'7 of Apr.24, 1967, and 48,816/66 dated Nov. 1, 1966, Ian Robert Forrest fromwhich priority is claimed.

This invention is concerned with improvements in or relating to storageand transport containers and is particularly concerned with suchcontainers for storing and transporting liquids and substances such asin granular, powered or paste form.

More, specifically, the type of container with which the the inventionis concerned consists of an outer receptacle of collapsible formconstructed of hard cardboard or like material and a preformed bagcontained within the outer receptacle, the bag being of plasticsmaterial, paper or metal foil and having an opening whereby the bag maybe filled or the contents emptied therefrom. Containers of this type arealready well known and in some cases, the bag is secured to the interiorsurfaces of the walls of the outer receptacle, while in others it issecured to end flaps of the outer receptacle. It is also known to havethe bag loose within the outer receptacle and only secured thereto bymeans of a pouring neck or closure member which is attached to a wall orflap of the outer receptacle.

However, in all such constructions the ability of the container towithstand shock, puncture and the stresses to which such containers arenormally subjected is wholly dependent on the qualities and propertiesof the material of the outer receptacle. If to reinforce the containerthe outer container is formed of a thicker material than is usual, notonly will the cost of production of the container increase, but also theweight and bulk thereof will render it more unwieldy than containers ofwhich the receptacles are of thin material. In addition, there is stillthe possibility that with the receptacle of thicker material puncture ofor damage to the container will still occur, so rendering it unusable ifthe damage is extensive.

It is an object of this invention to provide a novel container whichovercomes as much as is possible the disadvantages attendant to damagethereof and which provides other advantages set forth hereinafter.

Accordingly the present invention provides a container for liquids andsubstances in granular or paste condition which comprises an outerreceptacle, a liner slidably fit ting within the outer receptacle, and abag of flexible sheet material secured to the inner surface of the wallsof said liner. The liner is preferably of substantially squarecross-section formed of rigid or semi-rigid material such as cardboard,chipboard or plastics and processed material. The bag may be secured tothe liner on at least two opposite side Walls of the latter either overthe whole surface of these side walls or at specific locations thereonso that the liner which is of collapsible construction erects the bag asit is erected. Furthermore the bag ice extends beyond the confines ofthe liner at each end. Preferably the bag is in its flat formconstructed as a rhombus.

The provision of the liner for a container provides a stronger and morerigid construction than hitherto since effectively with the liner insidethe outer receptacle, the thickness of the protective packing for thebag is increased. This advantage can be expressed in a number of ways:impact against a side wall of the outer receptacle, which could piercethe wall or at the least damage the wall will be resisted by the linerso that the bag within is not punctured, stress or strain on thereceptacle will not readily result in the collapse of the containerstructure and if the outer receptacle should be damaged in any way, theliner and bag can be removed from the receptacle and re-placed inanother receptacle without having to empty the contents thereof intoanother bag as is done at present when a container of the knownconstruction described above is damaged.

If the outer receptacle is formed of laminated cardboard wherein atleast one of the laminations is corrugated, then the liner may also beformed of the same material, the fluting of the corrugations of eachwall of the liner being orthogonal to those of the adjacent wall of theouter receptacle. This provides greater resilience of the assembledcontainer and also enables it to withstand weight of other containerswhen it is stacked on its side.

Additionally containers of the type according to the invention are moreable to withstand weight of other containers when these are stacked oneupon the other, due to the reinforcement of the outer receptacle by theliner and also due to the walls of the outer receptacle and the linerbearing equally the weight of other containers stacked thereon. It willbe completely understood by a man skilled in the art that the linerprovided as an important feature of the invention is for the dualpurpose of protecting the flexible bag and also for giving extrastrength and support to the outer receptacle. It will be appreciatedthat the liner per so can not be used as an outer receptacle by itselfand it is not intended that the liner should be used or even consideredas an outer receptacle since it can not provide the requirements of anouter receptacle, has no end closure flaps and is completely collapsiblewhen not within an outer receptacle.

The above invention provides a container for liquids and substances ingranular, pulverulent or paste form which comprises an outer rigidcontainer of metal, rigid plastics material or the like and having aliner slidably fitting therein with a bag of flexible sheet material adhered to the inner surface of the walls of the liner.

The liner is so formed as to fit within the outer container and may beof any desired cross-section such as to fit inside the outer containerwith a slidable fit.

Having set forth some of the principal features and advantages of theinvention, it will now be hereinafter described with reference to theaccompanying drawings in which:

FIGURE 1 is a perspective view of a container according to the inventionshowing the liner in the outer receptacle with the bag removed. taclewith the bag removed,

FIGURE 2 is a similar view of FIGURE 1 but showing the bag in situ andthe bottom flaps closed,

FIGURE 3 shows a blank from which the outer receptacle is formed,

FIGURE 4 is a plan view of a container as is FIG- URE 1,

FIGURE 5 is a front view thereof,

FIGURE 6 is a plan view of a flat bag,

FIGURE 7 is a perspective view of a closure device for the bag,

FIGURE 8 is a sectional view of a closure device secured to a flap ofthe outer receptacle,

FIGURE 9 is an alternative part for the closure device.

In FIGURES 1 to 5,'the outer receptacle is generally indicated at 1, andconsists of four side walls 1a, 1b, 1c, 10, four upper closure flaps 2a,2b, 2c, 2d and four lower closure flaps 3a, 3b, 3c, 3d. Within the outerreceptacle 1, there is a liner 4, the dimensions of which aresubstantially equal to those of the receptacle interior. The liner 4comprises four side walls 4a, 4b, 4c, 4d, formed from a rectangularblank 5 shown in dotted outline in FIGURE 3 super-imposed on the blank 6from which the outer receptacle 1 is formed. The four side walls 4a, 4b,4c, 4d are formed by three parallel crease lines, scores or folds 7, 8,9 equidistantly spaced from one another. The two parallel end edges 10and 11 of the liner are then brought together and joined by adhesivetape, or any other suitable means. For example, the blank 5 may have alateral strip at one end thereof which is formed by making a lateralfold line adjacent that edge, the liner then being folded round so thatthis strip lies adjacent the other end of the block. Alternatively,instead of the strip, two or more tongues formed integrally with theblank may provide the means for securing the two edges thereof together,the bond between the one edge of the blank and the lateral strip ortongues being adhesive or by stapling the adjacent parts together. Theheight of the liner is slightly less than the height of the walls 1a,1b, 1c, 1d of the outer receptacle.

The outer receptacle 1 is formed from a blank 6 (FIG- URE 3) which isscored, creased or folded horizontally and vertically. The height of theside walls or panels 1a, 1b, 1c, 1d is determined by the distancebetween the two parallel fold lines 12 and 13 which extend over thelength of the blank 6. The width of the side walls or panels isdetermined by the distance apart of adjacent pairs of parallelequidistantly spaced fold lines 14, 15, 16 and the edges 17 and 18 ofthe blank 6. Each of the fold lines 14, 15, 16 is continued above thehorizontal fold line 12 as a cut, 19, 20, 21, and similarly below thefold line 13 as cuts 22, 23, 24 respectively. The fold lines 12, 13 andthe cut 19 to 24 delineate the upper and lower closure flaps of theouter receptacle, and since the formed receptacle is of substantiallysquare cross-section the height h of each flap should be equal toslightly less than its width w as is well known. In the form of blankshown in FIG- URE 3, a flap 25 is provided at one end of the blank inwhich case the edge 18 previously referred to will be a fold line. Inthe former instance the two edges 17 and 18 would be joined by adhesivetape or the like whereas with the flap 25, the latter would lie againstthe wall or panel 1a adjacent the edge 17 and be secured thereto bygluing, stapling or some such means. When this has been completed, thebottom flaps 3a to 3d will then be folded to close the receptacle bottomas is shown in FIGURE 4 and secured in position by the application ofglue or the like to the outer faces of the flaps 3a, and/ or to theinner faces of flaps 3b, 3d.

Turning now to FIGURE 6, a specific form of the bag is generallyindicated by reference numeral 26. The bag is formed from two flatsheets of plastics material, paper or metal foil, which arerhombus-shaped, the two flat sheets of material 'being placed togetherso that their corresponding edges are adjacent, the edges then beingheat sealed as at 27. When the bag has been formed it is secured to thelining by adhesive in such a manner that when the lining is erected thebag is also erected. The side corners of the bag are folded over asindicated by the dotted lines 28 and 29 in FIGURE 6. The bag is notenclosed by the liner 4 and extends for some way beyond the lower edgesthereof. When the bag and liner are secured together, both are thenplaced in the outer receptacle 1, as is shown in FIGURE 2. The upper andlower portions of the bag may then be folded over.

The bag is provided with a closure device, of the type shown in FIGURES7, 8 and 9, the closure device being preferably secured to one of theflaps 2a, to 2d of the outer receptacle (flap 2d in FIGURE 2). For thispurpose a circular aperture would be formed in the flap ring 30, havinga fiangeportion 3-1 and an externally threaded portion 32 of lesserdiameter than the flange 31 is inserted through the aperture of the flap2d. The fiange 31 abuts against the outer surface of the flap and thescrew threaded portion 32 projects through the aperture, the second ring33 being screwed on to this threaded portion to provide a tight fittingneck for a stopper 34. Interiorally the ring 30 is screw threaded as at35 and the stopper 34 is correspondingly screw threaded at 36 to fitwithin the ring 30. In FIGURE 9 a further form of the ring 33 is shownat 330. This ring is provided with a number of outwardly adjacenttri-angular teeth 37. It has been found that with a smooth surface, suchas that of cardboard, the ring 33 of the screw threaded ring 30 willslip and in order to overcome this the teeth 37 are provided to embedthemselves into the cardboard to prevent slipping of the rings 30 and33. As a further alternative (not shown) the ring 30 is not interiorlyscrew threaded and the stopper 34 is similarly not screw threaded. Inthis case the stopper will simply form a tight fit within the ring 30.

Although only one form of container has been described with reference tothe accompanying drawings, it will be readily understood that otherforms of the invention are possible.

What I claim is:

1. A container capable of containing a liquid or granulated pastecomprising a hexahedronal outer receptacle, a liner having a rectangularcross-section slidably fitted within said outer receptacle, a bagsecured to said liner and extending beyond top and bottom portionsthereof, and said bag having a rhomboidal configuration when laid fiat,said rhomboidal configuration facilitating said bag neatly folding uponitself at said top and bottom portions of said liner thereby assuming ahexahedronal configuration conforming to said outer receptacle.

2. A container as defined in claim 1 wherein said bag is formed from twoflat rhombus-shaped sheets of flexible material positioned in overlyingjuxtaposition to one another, and said sheets being suitably secured toeach other along the corresponding edge portions thereof.

3. A container as defined in claim 1 wherein said bag includes anopening sealed by a suitable closure device.

4. A container as defined in claim 1 wherein said bag is folded atopposite corners thereof to facilitate insertion in said liner.

References Cited UNITED STATES PATENTS 2,446,308 8/ 1948 Smith.2,565,939 8/1951 Wriston 220--63 2,946,494 7/ 1960 Kuss. 2,973,1192/1961 Parker. 3,014,631 12/1961 Fischer et al. 3,143,249 8/ 1964Merrill et al. 3,194,471 7/ 1965 Murphy. 3,226,002 12/1965 Walker.

FOREIGN PATENTS 1,090,432 10/1954 France. 1,237,455 7/1960 France.

98,370 7/1961 Norway.

DAVIS T. MOORHEAD, Primary Examiner US. Cl. X.R. 22063

